I have purchased an "unknown" white coloured powder from the market which can frost glass objects. Here are some properties of this powder
- White in colour
- When mixed with HCL or water, it results in the soluion becoming ice cold, the reaction is endothermic.
- When kept for a while (10 minutes) the white powder settles at the bottom of the plastic vessel and the acid floats above it.
- When stirred, the entire solution becomes milky
- When glass is dipped in this solution for 90 seconds, it becomes frosted/translucent.
Since I am not sure what this chemical is, I cannot determine the safest method to dispose it. The person from whom I brought this told me to put it down the drain, but I wouldnt choose to do that before I know if it will not effect the water table near my locality.
Can someone point out what could this powder be, and the best way to dispose it off?